# Trigonometry Important Questions, Trigonometry Formula Class 10

TRIGONOMETRY

The word ‘Trigonometry’ is derived from the Greek words:

⇒                                                            Tri                         three

⇒
gon                        sides

⇒                                                            metry                    measure

“Trigonometry is the study of relationship between the sides and the angles of a triangle”

### Trigonometric Ratios

Ratios of the sides of a right triangle with respect to its acute angles, called the trigonometric ratios of the angle.

### Quotient Relations: $\begin{array}{l}\left(\text{i}\right)\text{\hspace{0.17em}}\mathrm{tan}A=\frac{\mathrm{sin}A}{\mathrm{cos}A}\\ \left(\text{ii}\right)\text{\hspace{0.17em}}\mathrm{cot}\text{\hspace{0.17em}}A=\frac{\mathrm{cos}A}{\mathrm{sin}A}\end{array}$

As you have gone through the Trigonometry Notes and Formula list, now time to practice Trigonometry Important Questions based on above Trigonometric Formulae.....

#### Trigonometry Important Questions Class 10 2021

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